Fifty years ago, as baseball faced crises on and off the field, two larger-than-life figures took center stage, each on a quest to reinvent the national pastime In the late 1950s, baseball was under siege. Up-and-coming cities that wanted teams of their own were being rebuffed by the owners, and in response Congress was threatening to revoke the sport's antitrust exemption. These problems were magnified by what was happening on the field, as the New...